Trần Văn Sơn

Short-term goal: Secure a full-time mobile developer position to apply and improve my Android skills. Long-term goal: Continuously grow as a software engineer by working on impactful products, deepening my expertise in mobile technologies, and contributing effectively to team success.

Android Developer - Biexce - Ho Chi Minh City

(2025-07)

• Developed and maintained a Android messaging application using Kotlin and MVVM.
• Implemented End-to-End Encryption (E2EE) for messaging and group communication.
• Integrated WebRTC for real-time audio and video calling.
• Built user interfaces using XML and Jetpack Compose, and migrated legacy XML screens to Compose.
• Implemented real-time chat features using WebSocket.
• Collaborated with backend engineers to integrate REST APIs and real-time services.
• Investigated and resolved production issues, including crashes, ANRs, and memory leaks.
• Published and maintained Android applications on Google Play Store.

Junior Xamarin Android Developer - UGOTECHS - HCM City

(2024-07 - 2025-07)

Language: Xamarin Android, C#

• Fixed bugs and developed new user interfaces (UI) using XML, optimized for multiple screen sizes, resolutions, and device types.
• Handled Dynamic Currency Conversion (DCC) flows for multi-currency transactions.
• Implemented user and transaction data storage using SQLite.
• Developed and integrated REST API communication via HTTP and WebSocket protocols.
• Conducted thorough testing and wrote detailed documentation for the application.
• Handled multi-language support for the application.
• Implemented animations to enhance user experience and improve visual feedback.
• Developed and integrated a QR code scanner feature for device-user interaction using ZXing.
• Optimized app performance by reducing UI rendering time and improving SQLite query efficiency.

Intern Mobile Developer - TMA Solutions - HCM City

(2024-04 - 2024-06)

Language: Kotlin

• Applied MVVM architecture, Clean Code, and Dependency Injection in Android development
• Set up project structure, models, and business flow for Indoor Positioning System
• Researched and improved an app using BLE for indoor positioning

Bachelor - Software Engineering - Hutech University (2020-01 - 2024-01)